Impact of Architecture on Performance of USB to Serial Adapters "We were stunned at the performance difference between brands of multiport USB to serial adapters." Design architecture is the critical element. Findings There is a significant difference in…

The ACC-188 USB synchronous serial radio adapter (Item# 9065) and free software from DISA enables tactical radios with the capability to transmit and receive IP data such as email, text messages, GPS maps, images, coordinates, and other communications. The…

Definition of 9-bit framing 9-bit data framing is a simple, yet effective, method of allowing many embedded devices on a multidrop network to maximize processing time. This data transfer method is designed to improve the performance of the embedded devices…

Any Sealevel asynchronous serial adapter that includes a 16C950 UART or 16C954 quad-port UART natively supports 9-bit framing in hardware. USB serial adapters use a different chipset and are not capable of 9-bit data framing. Other Sealevel serial adapters…

Applications that require 9-bit protocols are rare so the chips that support them are more expensive than standard 8-bit UARTs. Most 8-bit UARTs can simulate 9-bit protocols by setting the parity bit to mark or space. This was an easy solution on the 16C450…